Headset



FIG. 1 is a perspective view of a headset showing my new design;

FIG. 2 is a front view thereof;

FIG. 3 is a rear view thereof;

FIG. 4 is a left side view thereof;

FIG. 5 is a right side view thereof;

FIG. 6 is a top view thereof; and,

FIG. 7 is a bottom view thereof.

The broken lines of the headset and the unshaded regions therein are for illustrative purposes only and form no part of the claimed design. The broken lines immediately adjacent to the shaded area in the figures represent unclaimed boundaries of the design. 

The ornamental design for a headset, as shown and described. 